JPEG Archive is described as 'Utilities for archiving photos for saving to long term storage or serving over the web. The goals are: use a common, well supported format (JPEG), minimize storage space and cost, identify duplicates / similar photos' and is an app in the Photos & Graphics category. There are more than 10 alternatives to JPEG Archive for a variety of platforms, including Mac, Windows, Linux, Online / Web-based and Android. The best alternative is Caesium Image Compressor, which is both free and Open Source. Other great apps like JPEG Archive are FileOptimizer (Free, Open Source), ImageOptim (Free Personal, Open Source), RIOT - Radical Image Optimization Tool (Free) and JPEGmini (Paid).
Caesium Image Compressor lets you compress your pictures up to 90% without visible quality loss. Providing a simple yet effective interface with a real-time preview and multiple image processing at the same time, everyone will be able to reach the best result.
ImageOptim is excellent for publishing images on the web (easily shrinks images “Saved for Web” in Photoshop). It's useful for making Mac and iPhone/iPad applications smaller (if you configure Xcode to allow better optimization).
Saving images for web/email/other media with the best compression ratio and quality is a difficult task if you don’t have the right tools. Choosing the right format then choosing the right parameters are the key factors of smaller files.